In-situ quantification of membrane foulants by Solid phase fluoresence excitation emission matrix

2022 Fiscal Year Final Research Report

• Project/Area Number: 20H02288
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 22060:Environmental systems for civil engineering-related
• Research Institution: Chuo University
• Principal Investigator: Yamamura Hiroshi 中央大学, 理工学部, 教授 (40515334)
• Co-Investigator(Kenkyū-buntansha): 中屋 佑紀 北海道大学, 工学研究院, 助教 (60868735) ; 丁 青 中央大学, 研究開発機構, 機構助教 (70837476)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 膜ろ過 / 固体蛍光分光測定 / クエンチング / 膜ファウリング / 蛍光スペクトル測定 / In-situ測定 / ゲル化

Outline of Final Research Achievements

The results of referencing the K-M function and fluorescence intensity of all samples confirmed that the fluorescence intensity tended to decrease for samples with larger K-M functions and colors that easily absorbed excitation light. Furthermore, since the relationship between the K-M function and fluorescence intensity could be fitted to the curve by a power-of-fit approximation, it is assumed that a mathematical formula can be constructed to predict the decrease in fluorescence intensity based on the K-M function.
The gelation of TPI-NOM and HPO-NOM induced a shift in the SPF-EEM peak position. This allowed us to link the gelation of NOM with the migration of the peak position by simultaneously measuring the gelation of NOM and SPF-EEM.

Free Research Field

環境工学

Academic Significance and Societal Importance of the Research Achievements

着色によるSPF-EEMのクエンチング効果を定量的に評価し，スペクトルを定量的に解析できるようになれば，ファウリング物質の量に応じて薬品使用量を最低限にし，膜寿命の長寿命化ならびに洗浄排水量の大幅な削減も可能になる。
さらに，ゲル化のタイミングが明らかになることで，膜洗浄ｎタイミングを的確に捉えることが可能になる。